Articles | Volume 21, issue 10
https://doi.org/10.5194/acp-21-7515-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-7515-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The advective Brewer–Dobson circulation in the ERA5 reanalysis: climatology, variability, and trends
Institute of Energy and Climate Research, Stratosphere (IEK-7), Forschungszentrum Jülich, 52 425 Jülich, Germany
Manfred Ern
Institute of Energy and Climate Research, Stratosphere (IEK-7), Forschungszentrum Jülich, 52 425 Jülich, Germany
Felix Ploeger
CORRESPONDING AUTHOR
Institute of Energy and Climate Research, Stratosphere (IEK-7), Forschungszentrum Jülich, 52 425 Jülich, Germany
Institute for Atmospheric and Environmental Research, University of Wuppertal, Wuppertal, Germany
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- Atmospheric impacts of chlorinated very short-lived substances over the recent past – Part 2: Impacts on ozone E. Bednarz et al. 10.5194/acp-23-13701-2023
- The stratospheric Brewer–Dobson circulation inferred from age of air in the ERA5 reanalysis F. Ploeger et al. 10.5194/acp-21-8393-2021
- Stratospheric water vapour and ozone response to the quasi-biennial oscillation disruptions in 2016 and 2020 M. Diallo et al. 10.5194/acp-22-14303-2022
Latest update: 16 Aug 2024
Short summary
Despite good agreement in the spatial structure, there are substantial differences in the strength of the Brewer–Dobson circulation (BDC) and its modulations in the UTLS and upper stratosphere. The tropical upwelling is generally weaker in ERA5 than in ERAI due to weaker planetary and gravity wave breaking in the UTLS. Analysis of the BDC trend shows an acceleration of the BDC of about 1.5 % decade-1 due to the long-term intensification in wave breaking, consistent with climate predictions.
Despite good agreement in the spatial structure, there are substantial differences in the...
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